<!DOCTYPE html>
<html>
  <head>
    <title></title>
    
    <script src="./js/jquery.min.js"></script>
  </head>
  <style>
    * {
      padding: 0;
      margin: 0;
    }
    html,
    body {
      height: 100%;
      padding: 0;
      margin: 0;
      background: #000;
      overflow: hidden;
      
    }

    .aa {
      position: fixed;
      left: 50%;
      bottom: 10px;
      color: #ccc;
    }

    .container {
      width: 100%;
      height: 100%;
    }
    canvas {
      z-index: 99;
      position: absolute;
      width: 100%;
      height: 100%;
    }
    .text {
      color: #ccc;
      font-size: 24px;
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      top: 47%;
      z-index: 99;
    }
  </style>
  <body>
    <!-- 樱花 -->
    <p class="text">love you</p>
    <div id="jsi-cherry-container" class="container">
      <audio autoplay="autopaly">
        <source src="renxi.mp3" type="audio/mp3" />
      </audio>
      <!-- <img class="img" src="./img/wallhaven-y8622k.png" alt="" /> -->
      <!-- 爱心 -->
      <canvas id="pinkboard" class="container"> </canvas>
    </div>
  </body>
</html>
<script>
  /*
   * Settings
   */
  var settings = {
    particles: {
      length: 500, // maximum amount of particles
      duration: 2, // particle duration in sec
      velocity: 100, // particle velocity in pixels/sec
      effect: -0.75, // play with this for a nice effect
      size: 30, // particle size in pixels
    },
  };

  (function () {
    var b = 0;
    var c = ["ms", "moz", "webkit", "o"];
    for (var a = 0; a < c.length && !window.requestAnimationFrame; ++a) {
      window.requestAnimationFrame = window[c[a] + "RequestAnimationFrame"];
      window.cancelAnimationFrame =
        window[c[a] + "CancelAnimationFrame"] ||
        window[c[a] + "CancelRequestAnimationFrame"];
    }
    if (!window.requestAnimationFrame) {
      window.requestAnimationFrame = function (h, e) {
        var d = new Date().getTime();
        var f = Math.max(0, 16 - (d - b));
        var g = window.setTimeout(function () {
          h(d + f);
        }, f);
        b = d + f;
        return g;
      };
    }
    if (!window.cancelAnimationFrame) {
      window.cancelAnimationFrame = function (d) {
        clearTimeout(d);
      };
    }
  })();

  /*
   * Point class
   */
  var Point = (function () {
    function Point(x, y) {
      this.x = typeof x !== "undefined" ? x : 0;
      this.y = typeof y !== "undefined" ? y : 0;
    }
    Point.prototype.clone = function () {
      return new Point(this.x, this.y);
    };
    Point.prototype.length = function (length) {
      if (typeof length == "undefined")
        return Math.sqrt(this.x * this.x + this.y * this.y);
      this.normalize();
      this.x *= length;
      this.y *= length;
      return this;
    };
    Point.prototype.normalize = function () {
      var length = this.length();
      this.x /= length;
      this.y /= length;
      return this;
    };
    return Point;
  })();

  /*
   * Particle class
   */
  var Particle = (function () {
    function Particle() {
      this.position = new Point();
      this.velocity = new Point();
      this.acceleration = new Point();
      this.age = 0;
    }
    Particle.prototype.initialize = function (x, y, dx, dy) {
      this.position.x = x;
      this.position.y = y;
      this.velocity.x = dx;
      this.velocity.y = dy;
      this.acceleration.x = dx * settings.particles.effect;
      this.acceleration.y = dy * settings.particles.effect;
      this.age = 0;
    };
    Particle.prototype.update = function (deltaTime) {
      this.position.x += this.velocity.x * deltaTime;
      this.position.y += this.velocity.y * deltaTime;
      this.velocity.x += this.acceleration.x * deltaTime;
      this.velocity.y += this.acceleration.y * deltaTime;
      this.age += deltaTime;
    };
    Particle.prototype.draw = function (context, image) {
      function ease(t) {
        return --t * t * t + 1;
      }
      var size = image.width * ease(this.age / settings.particles.duration);
      context.globalAlpha = 1 - this.age / settings.particles.duration;
      context.drawImage(
        image,
        this.position.x - size / 2,
        this.position.y - size / 2,
        size,
        size
      );
    };
    return Particle;
  })();

  /*
   * ParticlePool class
   */
  var ParticlePool = (function () {
    var particles,
      firstActive = 0,
      firstFree = 0,
      duration = settings.particles.duration;

    function ParticlePool(length) {
      // create and populate particle pool
      particles = new Array(length);
      for (var i = 0; i < particles.length; i++) particles[i] = new Particle();
    }
    ParticlePool.prototype.add = function (x, y, dx, dy) {
      particles[firstFree].initialize(x, y, dx, dy);

      // handle circular queue
      firstFree++;
      if (firstFree == particles.length) firstFree = 0;
      if (firstActive == firstFree) firstActive++;
      if (firstActive == particles.length) firstActive = 0;
    };
    ParticlePool.prototype.update = function (deltaTime) {
      var i;

      // update active particles
      if (firstActive < firstFree) {
        for (i = firstActive; i < firstFree; i++)
          particles[i].update(deltaTime);
      }
      if (firstFree < firstActive) {
        for (i = firstActive; i < particles.length; i++)
          particles[i].update(deltaTime);
        for (i = 0; i < firstFree; i++) particles[i].update(deltaTime);
      }

      // remove inactive particles
      while (
        particles[firstActive].age >= duration &&
        firstActive != firstFree
      ) {
        firstActive++;
        if (firstActive == particles.length) firstActive = 0;
      }
    };
    ParticlePool.prototype.draw = function (context, image) {
      // draw active particles
      if (firstActive < firstFree) {
        for (i = firstActive; i < firstFree; i++)
          particles[i].draw(context, image);
      }
      if (firstFree < firstActive) {
        for (i = firstActive; i < particles.length; i++)
          particles[i].draw(context, image);
        for (i = 0; i < firstFree; i++) particles[i].draw(context, image);
      }
    };
    return ParticlePool;
  })();

  /*
   * Putting it all together
   */
  (function (canvas) {
    var context = canvas.getContext("2d"),
      particles = new ParticlePool(settings.particles.length),
      particleRate = settings.particles.length / settings.particles.duration, // particles/sec
      time;

    // get point on heart with -PI <= t <= PI
    function pointOnHeart(t) {
      return new Point(
        160 * Math.pow(Math.sin(t), 3),
        130 * Math.cos(t) -
          50 * Math.cos(2 * t) -
          20 * Math.cos(3 * t) -
          10 * Math.cos(4 * t) +
          25
      );
    }

    // creating the particle image using a dummy canvas
    var image = (function () {
      var canvas = document.createElement("canvas"),
        context = canvas.getContext("2d");
      canvas.width = settings.particles.size;
      canvas.height = settings.particles.size;
      // helper function to create the path
      function to(t) {
        var point = pointOnHeart(t);
        point.x =
          settings.particles.size / 2 +
          (point.x * settings.particles.size) / 350;
        point.y =
          settings.particles.size / 2 -
          (point.y * settings.particles.size) / 350;
        return point;
      }
      // create the path
      context.beginPath();
      var t = -Math.PI;
      var point = to(t);
      context.moveTo(point.x, point.y);
      while (t < Math.PI) {
        t += 0.01; // baby steps!
        point = to(t);
        context.lineTo(point.x, point.y);
      }
      context.closePath();
      // create the fill
      context.fillStyle = "#ea80b0";
      context.fill();
      // create the image
      var image = new Image();
      image.src = canvas.toDataURL();
      return image;
    })();

    // render that thing!
    function render() {
      // next animation frame
      requestAnimationFrame(render);

      // update time
      var newTime = new Date().getTime() / 1000,
        deltaTime = newTime - (time || newTime);
      time = newTime;

      // clear canvas
      context.clearRect(0, 0, canvas.width, canvas.height);

      // create new particles
      var amount = particleRate * deltaTime;
      for (var i = 0; i < amount; i++) {
        var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());
        var dir = pos.clone().length(settings.particles.velocity);
        particles.add(
          canvas.width / 2 + pos.x,
          canvas.height / 2 - pos.y,
          dir.x,
          -dir.y
        );
      }

      // update and draw particles
      particles.update(deltaTime);
      particles.draw(context, image);
    }

    // handle (re-)sizing of the canvas
    function onResize() {
      canvas.width = canvas.clientWidth;
      canvas.height = canvas.clientHeight;
    }
    window.onresize = onResize;

    // delay rendering bootstrap
    setTimeout(function () {
      onResize();
      render();
    }, 10);
  })(document.getElementById("pinkboard"));
</script>

<script>
  var RENDERER = {
    INIT_CHERRY_BLOSSOM_COUNT: 30,
    MAX_ADDING_INTERVAL: 10,

    init: function () {
      this.setParameters();
      this.reconstructMethods();
      this.createCherries();
      this.render();
      if (
        navigator.userAgent.match(
          /(phone|pod|iPhone|iPod|ios|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i
        )
      ) {
        // var box = document.querySelectorAll(".box")[0];
        // console.log(box, "移动端");
        // box.style.marginTop = "65%";
      }
    },
    setParameters: function () {
      this.$container = $("#jsi-cherry-container");
      this.width = this.$container.width();
      this.height = this.$container.height();
      this.context = $("<canvas />")
        .attr({ width: this.width, height: this.height })
        .appendTo(this.$container)
        .get(0)
      var rate = this.FOCUS_POSITION / (this.z + this.FOCUS_POSITION),
        x = this.renderer.width / 2 + this.x * rate,
        y = this.renderer.height / 2 - this.y * rate;
      return { rate: rate, x: x, y: y };
    },
    re
        }
      } else {
        this.phi += Math.PI / (axis.y == this.thresholdY ? 200 : 500);
        this.phi %= Math.PI;
      }
      if (this.y <= -this.renderer.height * this.SURFACE_RATE) {
        this.x += 2;
        this.y = -this.renderer.height * this.SURFACE_RATE;
      } else {
        this.x += this.vx;
        this.y += this.vy;
      }
      return (
        this.z > -this.FOCUS_POSITION &&
        this.z < this.FAR_LIMIT &&
        this.x < this.renderer.width * 1.5
      );
    }
  }
  $(function () {
    RENDERER.init();
  });
</script>
